Home / 84,743.60-126,769.80-76,449.20

Finding the Fourth Proportional to 84,743.60, 126,769.80 and 76,449.20

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Solution

The fourth proportional to 84,743.60, 126,769.80 and 76,449.20 is: 114,362.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,743.60 : 126,769.80 = 76,449.20 : x
  2. Step 2: Convert to fraction form
    84,743.60/126,769.80 = 76,449.20/x
  3. Step 3: Cross multiply
    84,743.60x = 126,769.80 × 76,449.20
  4. Step 4: Simplify right side
    84,743.60x = 9,691,449,794.16
  5. Step 5: Solve for x
    x = 9,691,449,794.16/84,743.60
  6. Step 6: Final answer
    x = 114,362.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.